Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f1b4f2916a7a393…

MALICIOUS

PDF

54.7 KB Created: 2020-08-08 22:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f5661c882bf05d6cd32e24e2cc1eadb SHA-1: 647f3fd0122368a3a056fd4251d250730ece619a SHA-256: 6f1b4f2916a7a393a00b140cd9e66f9c15148029ae4a481526252bf2abf7aee8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links designed to appear as legitimate documents, but they lead to a redirector known for malicious activity. The document body, though partially obfuscated, includes text related to a product manual and a URL that points to a malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wb?keyword=babies%20r%20us%20umbrella%20stroller%20manual In PDF document text
    • http://dejexi.1stophairshopgc.com/uploads/1/3/0/8/130814328/1026080.pdfIn PDF document text
    • http://gipejuki.carmendesousabooks.com/uploads/1/3/1/3/131383483/wazejarivifubemus.pdfIn PDF document text
    • http://files.autismstressalert.org/uploads/1/3/0/7/130740130/sobejitaz.pdfIn PDF document text
    • http://files.jaxwoodworkers.org/uploads/1/3/0/9/130970014/devoj.pdfIn PDF document text
    • http://files.redroomyoga.com/uploads/1/3/2/8/132814306/bekijoka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/goxikekovojegimijimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5517/8150/files/surisarezisol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/44787876084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/bangladesh_political_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/dumb_and_dumber_pretty_bird.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/36997979100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8125/2507/files/44214401739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/how_to_install_ai_dungeon_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/38333551893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/jivolifoxubegaxeboto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/63398776566.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9950 5020 bytes
SHA-256: 9c16c6d12480d751d9bf841fa6cd7921e37fddaa15e95fd21f94d311a7f20f59
font_01_sfnt_off0000aa46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA46 10304 bytes
SHA-256: 55f9e1e651f389bacc949a695be9be675a76174f3fa9670584f40dcaaf6d4a7e

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